[DebugInfo] Allow getDebugThreadLocalSymbol to return MCExpr

This allows getDebugThreadLocalSymbol to return a generic MCExpr
instead of just a MCSymbolRefExpr.

This is in preparation for supporting debug info for TLS variables
on PowerPC, where we need to describe the variable location using
a more complex expression than just MCSymbolRefExpr.

llvm-svn: 185460

Restrict the current TLS support to X86 ELF for now. Test that we don't
produce it on PPC & we can flesh that test case out with the right thing
once someone implements it.

llvm-svn: 185389

llvm-svn: 185292

is trying to do.

llvm-svn: 185191

llvm-svn: 185131

llvm-svn: 185086

CostModel: improve the cost model for load/store of non power-of-two types such as <3 x float>, which are popular in graphics.

llvm-svn: 185085

llvm-svn: 185071

Optimized integer vector multiplication operation by replacing it with shift/xor/sub when it is possible. Fixed a bug in SDIV, where the const operand is not a splat constant vector.

llvm-svn: 184931

radar://14057959

llvm-svn: 184872

This reverts commit 98a9b72e8c56dc13a2617de84503a3d78352789c.

llvm-svn: 184823

Sorry for the unit test churn. I'll try to make the change permanently
next time.

llvm-svn: 184705

This is an awful implementation of the target hook. But we don't have
abstractions yet for common machine ops, and I don't see any quick way
to make it table-driven.

llvm-svn: 184664

llvm-svn: 184642

A FastISel optimization was causing us to emit no information for such
parameters & when they go missing we end up emitting a different
function type. By avoiding that shortcut we not only get types correct
(very important) but also location information (handy) - even if it's
only live at the start of a function & may be clobbered later.

Reviewed/discussion by Evan Cheng & Dan Gohman.

llvm-svn: 184604

llvm-svn: 184566

This is a bit tricky as the xacquire and xrelease hints use the same bytes,
0xf2 and 0xf3, as the repne and rep prefixes.

Fortunately llvm has different llvm MCInst Opcode enums for rep/xrelease
and repne/xacquire. So to make this work a boolean was added the
InternalInstruction struct as part of the Prefix state which is set with the
added logic in readPrefixes() when decoding an instruction to determine
if these prefix bytes are to be disassembled as xacquire or xrelease.  Then
we let the matcher pick the normal prefix instructionID and we change the
Opcode after that when it is set into the MCInst being created.

rdar://11019859

llvm-svn: 184490

Access the TargetLoweringInfo from the TargetMachine object instead of caching it. The TLI may change between functions. No functionality change.

llvm-svn: 184360

Access the TargetLoweringInfo from the TargetMachine object instead of caching it. The TLI may change between functions. No functionality change.

llvm-svn: 184349

llvm-svn: 184228

For decoding, keep the current behavior of always decoding these as their REP
versions. In the future, this could be improved to recognize the cases where
these behave as XACQUIRE and XRELEASE and decode them as such.

llvm-svn: 184207

Someone may want to do something crazy, like replace these objects if they
change or something.

No functionality change intended.

llvm-svn: 184175

Frame index handling is now target-agnostic, so delete the target hooks
for creation & asm printing of target-specific addressing in DBG_VALUEs
and any related functions.

llvm-svn: 184067

And add Sandybridge/Haswell resource buffers.

llvm-svn: 184034

llvm-svn: 184033

Replace the ill-defined MinLatency and ILPWindow properties with
with straightforward buffer sizes:
MCSchedMode::MicroOpBufferSize
MCProcResourceDesc::BufferSize

These can be used to more precisely model instruction execution if desired.

Disabled some misched tests temporarily. They'll be reenabled in a few commits.

llvm-svn: 184032

Give it the right register format so we can also emit it when AVX is enabled.

llvm-svn: 183971

llvm-svn: 183907

LLVMX86CompilationCallback2, called from inline asm.

llvm-svn: 183824

match the comments and what the instruction actually does. Noticed
on inspection.

llvm-svn: 183809

llvm-svn: 183808

Previously LEA64_32r went through virtually the entire backend thinking it was
using 32-bit registers until its blissful illusions were cruelly snatched away
by MCInstLower and 64-bit equivalents were substituted at the last minute.

This patch makes it behave normally, and take 64-bit registers as sources all
the way through. Previous uses (for 32-bit arithmetic) are accommodated via
SUBREG_TO_REG instructions which make the types and classes agree properly.

llvm-svn: 183693

llvm-svn: 183626

the internals of TargetMachine could change.

No functionality change intended.

llvm-svn: 183571

llvm-svn: 183570

Caching it as a pointer allows us to reset it if the TargetMachine object
changes.

llvm-svn: 183361

Add earlyclobber constaints to prevent input register being allocated as
the output register because, according to Intel spec [1], "If any pair
of the index, mask, or destination registers are the same, this
instruction results a UD fault."

---
[1] http://software.intel.com/sites/default/files/319433-014.pdf

llvm-svn: 183327

In ELF (as in MachO), not all relocations point to symbols. Represent this
properly by using a symbol_iterator instead of a SymbolRef. Update llvm-readobj
ELF's dumper to handle relocatios without symbols.

llvm-svn: 183284

llvm-svn: 183103

Very sorry, it was committed from the wrong branch by mistake.

llvm-svn: 183070